[Roxygen-devel] Use of roxygen() in example

[Peter Danenberg]

> Would it be possible to change the examples (e.g. in the vignette
> and manual) to use NULL instead?

It should be; if you notice, the first vignette example uses NA. We
only special-case roxygen() to avoid warning the user when the
expression doesn't appear to contain a name.

Would NULL be more appropriate than, say, NA?